Portable electric lamp.



H, HENDERSON @L A. E. CASE.

OETABLE ELECTRIC LAMP. 4 PPLICATKGH FVL SEPT. 30. HHG.

LZQAQQ lim-@1m M. 2:), 12m.

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NITED STATE-Pe @Meer Feroe.

HARRY HENDERSON AND ARTHUR E. CASE, F MARIGN, INDIANA, ASSIGNORS TO DELTA. ELECTRIC COMPANY, OF MARION, INDIANA, A CGRPRATON F INDIANA.

EORTABLE ELECTRIC LMP.

Application filed September 30, 1916. Serial No.

T0 @ZZ whom if may con-Germ( Be it known that We, HARRY Hnxonusox and ARTHUR E. CASE, both citizens of the United States, and residents of lvlarion7 in the county of Grant and State of l'ndiana,

v hereof.

In the drawings: Figure 1 is a side elera-s tion of .n lamp embodying the invention.

lli

Fig. 2-

a longitudinal section on a Sonie- Wlrat larger' scale. Fig. 3 is a plan of a. blank from which thev tubular lamp body is formed. Fig. 4t is e section taken on line 4-4 of Fig. 2. Fig. 5 is an inner face. view of the removable cap at one end of the lamp body. Fig'. 6 is a .section on line 'G--G of Fig. 5. Fig. 7 is a Section taken on line 7 7 of Fig. 5.

The lamp comprises a. tubular lood;1 E, a hood 9 at one end of the body and containing a light reflector 10. a lens 11. a lensretaining ring 12. and a cap l-i tor closingy the other end `otthe body. All of thesev parts. except the lens are formed of wheel'. metal. Hood 9 is 'formed of a single piece of metal, is cup-Shaped and comprises an annunl'rwall 15a and a wall 15 which foi-ins one end of the tubular body 8. An incandescent lanip socket 16 is secured in said Wall 15. An incandescent lamp 17 of 'usual construction is screw-threaded into the socketna-nd hasthe usual hase 18 forming' one of the lamp-contacts and tip-contact 19.

lThe body 8 is cylindrical and adapted and formed to contain a dry-hattery 20 which is provided with a pole-piece 21 at one end which is adapted'to contact with the tip contact 19 of the lamp. Cap 14 is cup-shaped and has a flange 14 which fits around one end portion of the body 8. The flange H is` formed with angular indentations, as at 22, to form grooves to receive and hold indentations 23 on the tubular body 8. This construction forms a. bayonet ,catch which Specification of Letters Patent.

Patented Feb. 25, 1919.

permits the cai) to be readily removed and replaced as is desirable in replacing the dry battery and in which the. catch-parts arc integral with bod): and cap respectively. The end of cap lllis provided with istruckup tongueS 2-1- which are adapted to pass` through a plate of inhulaiion 25 and Secure it to the cap. coiuluctor-strip 2G on the inner face ot the insulating r plate 2.3 has integral etrucleup tongues 2T which extend through holes 2S which are i'ornied in the insulatin; Y plate to secure thi strip in the cap. The. ends .ot thc tongues 'T are held in countereunh portions 27"* oi thc insulating plate so that they will not contact with the end ot the can. A coil spring' 2S?. the inner ind ot which is adapted to contact with the usual pole piece. on the lower end of the battery 20. has one olf its coils extended bct-ween the strip :lo and the inner lace ot the insulating plate 'Z5 and is `Secured in posivtion so that it will be. removable with thel vcap by strip '2o. The outcr ends ot' atrio 2G are bent toward the. end oi' the cap. as at 30. lo forni contact-surfaccs i'or a switchstrip 3i which in slidabl)Y held in thc body S so that it can he hittcd` into or out of v engagement with one oi the terminals $30. iVhcn strip 51 engages tlie'tcrininal 30. a circuit will be estahli hcd a follows: pole piece 2l. lipwontact lll. lalni il. lamp-hase 1R. :socket lli. hood l). body H. `trip 3l. Strip :do which is insulated l'roni cal 14. spring 9 and the lower pole ot the battery.

The. bod)v 8 is i'orincd oi: a single sheetof nictal a5 shown in Fig". El. the margins o1' which are provided with intcrliiiing dove.- tailed iongrue l and notchesv 334 and also with integral tongue- $55 which are insert-ed through slot 3o in the wall 15 ol the hood f) and clenched on the insidel thereof., as at 37, to Securely. unite the hood and body. This attachment. also Serves to hold the body blank in tubular forni. YWhen thc blank has been bent to form a tubular body, the interfitting tongues are flush with one another so that there. is no objectionable excrescence on the periphery ofwthe body. T he switch-strip 31 iS formed of a flat strip of metal. one end ot' which is extended through a notch 39 adjacent one end of the body to guide said end positively into and out of engagement with one of the Contact terminals 30 ot' the .conductor strip 26. Adjacent the other end,

i theslot. and a terminal 42 o vso `may be modified within tbc strip 3l extends through a slot tl in the body and is provided with an ott-set portion -ltl outside otl tbe body which serves' as a 4handle or linger-piece for shifting the switch strip. The portion -tO disposed outside ot' the slot l1 is slightly wider than said strip is extended longitudinally in the body. Asa result. the strip. which is formed of a. single piece of metal, can be inserted tlu'ough thc slot 41 and the )ortiions inside of the body an be bent. Tiis saves the cost of additional parts for raiding the strip and exemplifies a. switc strip guided in the case and formed of a single piece lof metal. In-` de'ntations 23 in the body and angular indented portions 22 exemplify a quick detachable connection between the cap and the body which is formed without additional pieces ofn'iaterial.

The invention exemplifies a portable tlash lamp which can be produced at an exceptionally low cost and is simple in construction.

The invention is not to be understood as restricted to thedetails set forth. since these the scope of thc appended claims. without departing from the spirit and `scope of the invention.

Ilaying thus described the invention. what.- we claim as new and desire to secure by Letters Patent, is': l

1; In a portable electric lamp. the combination of a metallic body formed ot' a sheet of metal having its margins provided with intertitti'ng and interlocking tongues and notches. said body adapted to containa battery, a hood mounted at one end of said body and holding `said body in assembled form. a lamp within said hood. and a cap dctachably mounted at the other end otl said body? 2. In a-portablc. electric lamp. the combination of a metallic body t'ormed ol a sheet 0f metal havingfits margins provided with intertitting and interlocking tongues and notches. saidbody adapt-cd to contain a bat- .tery, a hood mounted aty oney end of said body and holding said body in assembled form. a lamp within lsaid hood` a cap detaehably mounted aty the other end of said body, and means for establishing a circuit from' the battery through .the lalnp.

Il. Tn a. portable electric lamp, the, combination of a tubular metallic body formed of a sheet. ot metalland having intel-fitting and interlocking tongues and notches and adapted to cont-ain a battery. a hood mounted at one end of said body and holding said body in tubular form, a lamp wit in said hood` a cap detaehably mounted at the other end of said body. and means for establishing' al circuit. from the battery through the lamp.

4. In a portable electric lamp, the combination of a metallic body formed of a sheet.

of metal having its margins provided with intertitting and iliterlocking tongues and notches and adapted to contain a battery, a bood at thc end of said body connected thereto by tongue and slot connections. a lamp mounted in the hood, and a cap detachably connected to the other end of the body. In a portable electric lamp, the colnbination of a metallic body formed of a sheet of metal having its margins'provided with interttting and interlocking tongues and notches and adapted to contain a battery, a hoodat the end of said body connected thereto by tongue and lamp mounted in the hood, a cap detachably connected to the other end of the body, an( means for establishing a circuit through the battery and the lamp.

ti, ln a portable electric lamp, the combination of a tubular metallic body adapted to contain `a dry battery, a lamp mounted at one end of the body and having its base electrically comiccttalto thebody, a cap detachably connected to the other end of the metallic bodyl an insulating member fitting against the inner face of the cap, the cap being provided with struck-up tongues extended through the insulation securing the cap and insulation together, a. conductor` strip secured to the insulating member. means for connecting the conductor strip to one pole. of the battery,'and a switch strip mounted on the body and movable into contact with said conductor strip.

T. ln a portable electric lamp. the combi` nation of a tubular metallic body adapted to contain a dry battery. a lamp mounted at one. end of the body and having its base electrically connected to the body. a cap dctachably connected to the other end of the `luctallic body.` an insulating member tilting against and secured to the inner face of the cap` a conductor plate provided with struckup tongues securing the plate and insulating member together. meansfor connecting the conductor strip to one pole of the battery, and a switch strip mounted on the body and movable into contactl with Said conductor strip.

S. ln a port able, t'lectric lamp. the combination of a tubular metallic body adapted to contain a dry battery and having a slot therein, a lamp mounted at one end of the body and having its base electrically connected to the body. a cap detachably connected to the other end ol' the metallicbody, a conductor strip mounted in and insulated from the cap. and a switch strip slidnbly mounted in the body. having an integral portion extending tlnottglrsaid slot and integral enlarged handle portion on the out side of. the case lapping the sides of the slot so that the strip will be self-retained in the case.

9, In a portable electric lamp, the combislot connections, a

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